Well if they fix the stuck key problems why dump them? Maybe the new problems can be fixed somehow (lost ~ key is caused by using wrong kb layout maybe?), Voodoo trackpad scrolling I think is a current limitation, you can check on voodoo forum for more specific help.
But I doubt you will be able to fix that with Macbook's DSDT, arent Macbooks kb & trackpad USB or something (not PS/2)?